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Lock Status Indicator Device

a status indicator and lock technology, applied in the direction of building locks, construction, building construction, etc., can solve the problems of shortened service life, inconvenient for people outside the public lavatory or bathroom to unlock the door locks, and difficulty in assembly, so as to facilitate the description of the invention

Inactive Publication Date: 2011-01-27
I TEK METAL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0026]All figures are drawn for ease of explanation of the basic teachings of the present invention only; the extensions of the figures with respect to number, position, relationship, and dimensions of the parts to form the preferred embodiments will be explained or will be within the skill of the art after the following teachings of the present invention have been read and understood. Further, the exact dimensions and dimensional proportions to conform to specific force, weight, strength, and similar requirements will likewise be within the skill of the art after the following t

Problems solved by technology

However, conventional status indicator devices for door locks are generally mounted in casings of the door locks, requiring extensive modification to the structure of the door locks and, thus, resulting in difficulties in assembly.
In addition, the status indicator devices may be easily damaged resulting from forcible rotation of the handles of the door locks, leading to shortened service life.
Furthermore, it is inconv

Method used

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Examples

Experimental program
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first embodiment

[0028]A lock status indicator device of a first embodiment according to the preferred teachings of the present invention is shown in FIGS. 1-9 of the drawings and generally designated 10. Lock status indicator device 10 can be mounted on an outer surface 26 of a door 24 to indicate door 24 is locked or unlocked. Door 24 is provided with a door lock 30 including a bolt 32 moveable between an extended, latching position and a retracted, unlatching position. Inside and outside handles 84 are respectively mounted to inner and outer surfaces 27 and 26 of door 24 and operable to retract bolt 32 from the latching position to the unlatching position through an actuating member 90 (FIG. 8). Door lock 30 further includes a turnknob 33, a pivotal member 68, a follower plate 86, and a locking plug 88. Turnknob 33 is mounted on inner surface 27 of door 24 and connected with pivotal member 68. Follower plate 86 is connected between pivotal member 68 and locking plug 88. When pivotal member 68 is ...

fourth embodiment

[0038]FIG. 14 shows a lock status indicator device 10 of a fourth embodiment according to the preferred teachings of the present invention. The parts of lock status indicator device 10 shown in FIG. 14 identical to those shown in FIGS. 1 through 9 are not described to avoid redundancy. In particular, a recessed portion 100 is formed in outer face 56 of slider 14 and includes two engaging holes 101. Lock status indicator device 10 further includes a first indicator plate 102 provided with two pegs 106 on an inner face thereof and first and second indicators 59 and 65 on an outer face thereof, with second indicator 65 below first indicator 59 along second axis Y. Lock status indicator device 10 further includes a second indicator plate 104 provided with two pegs 106 on an inner face thereof and first and second indicators 59 and 65 on an outer face thereof, with second indicator 65 above first indicator 59 along second axis Y. Each of first and second indicator plates 102 and 104 is d...

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PUM

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Abstract

A lock status indicator device (10) includes a base (12) secured to an outer surface (26) of a door (24) with a door lock (30). The door lock (30) includes a bolt (32) moveable between an extended, latching position and a retracted, unlatching position. A slider (14) is slideably mounted to the base (12) and includes first and second indicators (59, 65) on an outer face (56) of the slider (14) for indicating the door (24) is in a locked status not allowing the bolt (32) to be retracted from the latching position to the unlatching position or in an unlocked status allowing the bolt (32) to be retracted from the latching position to the unlatching position. A cam (16) is pivotably mounted to the base (12) and includes a guiding slot (61) through which a protrusion (58) of the slider (14) slideably extends. A shaft (18) is engaged with the cam (16) and operably connected to a turnknob (33) of the door lock (30). The shaft (18) jointly rotates with the cam (16) in response to operation of the turnknob (33), which, in turn, moves slider (14).

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a lock status indicator device and, more particularly, to a lock status indicator device for indicating a status of a door to which a door lock is mounted.[0002]A typical door lock include at least one bolt (a latch bolt and / or a deadbolt) moveable between an extended, latching position and a retracted, unlatching position for latching a door to which the door lock is mounted. A turnknob or a button is mounted to an inner surface of the door, allowing locking of the door by operating the turnknob from the inside of the door. A key cylinder is mounted to an outer surface of the door, allowing unlocking of the door by operation of the key cylinder with a key from the outside of the door. Furthermore, it is known to provide the door lock, especially a door lock mounted to such as a door of a hotel room, a public lavatory or a public bathroom, with a status indicator device to indicate the door is locked or unlocked. Spec...

Claims

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Application Information

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IPC IPC(8): E05B41/00
CPCE05B65/0035E05B41/00Y10T70/8027
Inventor CHI, YI-TING
Owner I TEK METAL MFG